Portion of an aircraft cabin



FIG. 1 is a perspective view of a portion of an aircraft cabin showing my new design;

FIG. 2 is an another perspective view thereof;

FIG. 3 is a front elevation view thereof, with the unclaimed seats removed; and,

FIG. 4 is a right end elevation view thereof.

The heavy dashed broken lines around the perimeter of each drawing figure define the boundary of the claim and form no part of the claimed design. The light weight dashed broken lines shown in FIGS. 1 and 2 illustrate environment that forms no part of the claim. 

The ornamental design for a portion of an aircraft cabin, as shown and described. 